8
Magnetic
Words to learn: magnetic • magnet • iron • steel
A magnet can pull some objects without touching them, but many metals are not attracted at all.
WHAT IS THE PROPERTY?
Magnetic materials are attracted strongly by a magnet. Iron and many steels are magnetic; aluminium and copper are not.
HOW CAN WE TEST IT?
Bring the same magnet close to each sample without changing the distance. Record which materials are attracted.
WHY DOES IT MATTER?
Magnets help us make motors, catches, speakers, sorting machines and many other devices.
WHAT YOU NEED TO KNOW
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